Timing layers for color transfer assemblages containing positive

Details Timing layers for color transfer assemblages containing positive Timing layers for color transfer assemblages containing positive

1981-10-30

1983-03-01

Schilling, Richard L.

Radiation imagery chemistry: process, composition, or product th

Transfer procedure between image and image layer, image...

Diffusion transfer process, element, or identified image...

430212, 430218, 430223, 430236, 430239, 430454, 430531, 430536, 430523, G03C 140, G03C 110, G03C 554

Patent

active

043755062

ABSTRACT:
Photographic assemblages, elements, receiving elements and cover sheets comprise a combination of two timing layers and a neutralizing layer for use with negative-working silver halide emulsions and positive-working redox dye-releasers. The outermost timing layer has a negative temperature coefficient and has a development accelerator associated therewith to increase the development of the silver halide emulsion at low temperatures. The timing layer next to the neutralizing layer has a greater penetration time by the alkaline processing composition so that the neutralizing layer is permeated only after silver halide development has been substantially completed. The temperature latitude of the system is thereby increased.

REFERENCES:
patent: 3421893 (1969-01-01), Taylor
patent: 3455686 (1969-07-01), Farney et al.
patent: 4061496 (1977-12-01), Hannie et al.
patent: 4139379 (1979-02-01), Chasman et al.
patent: 4139389 (1979-02-01), Hinshaw et al.
patent: 4190447 (1980-02-01), Coil et al.
patent: 4201578 (1980-05-01), Abbott
patent: 4314020 (1982-02-01), Reed et al.

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